Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
ID | Date | Version | Classification |
---|---|---|---|
615146 | 08/09/2019 | 1.2 | Public |
Block Count (blockcount) – Offset 6
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
15:0 | 0000h | RW | Block Count (block_cnt_16bit) This register is enabled when Block Count Enable in the Transfer Mode register is set to 1 and is valid only for multiple block transfers. The HC decrements the block count after each block transfer and stops when the count reaches zero. It can be accessed only if no transaction is executing (i.e. after a transaction has stopped). Read operations during transfer return an invalid value and write operations shall be ignored.When saving transfer context as a result of Suspend command, the number of blocks yet to be transferred can be determined by reading this register. When restoring transfer context prior to issuing a Resume command, the HD shall restore the previously save block count. |